Intelligent reverse protection, the supply reverse connection does not damage the IC. The control circuit and the LED share the only source.Control circuit and RGB chip are integrated in a package of 5050 components, form a complete control of pixel . -in signal reshaping circuit, after wave reshaping to the driver, wave-form distortion not accumulate. -in electric reset circuit and lost reset circuit. Each pixel of the three primary color can achieve 256 brightness display, completed 16777216 color full color display, and scan frequency not less than 400Hz/s. Cascading port transmission signal by single line. Any two the distance more than 5m transmission signal without any increase circuit. When the refresh rate is 30fps, cascade number are not less than1024 points.Send data at speeds of 800Kbps. The color of the light were highly , cost-effective.. Material: PC+Metal colour: White Package Contents: 100 x WS2812B CHIP Only the above package content, other products are not included. Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.